# Einstein's 1935 papers: EPR=ER?

## TL;DR

This paper explores the possible conceptual connection between Einstein's 1935 EPR paper on quantum entanglement and the Einstein-Rosen bridge in general relativity, proposing a modern EPR=ER principle.

## Contribution

It analyzes whether Einstein viewed quantum entanglement and spacetime bridges as fundamentally related, integrating historical context with modern theoretical developments.

## Key findings

- Discussion of the historical context of Einstein's 1935 papers
- Analysis of the conceptual links between quantum entanglement and spacetime geometry
- Presentation of recent approaches proposing an EPR=ER equivalence

## Abstract

In May of 1935, Einstein published with two co-authors the famous EPR-paper about entangled particles, which questioned the completeness of Quantum Mechanics by means of a gedankenexperiment. Only one month later, he published a work that seems unconnected to the EPR-paper at first, the so called Einstein-Rosen-paper, that presented a solution of the field equations for particles in the framework of general relativity. Both papers ask for the conception of completeness in a theory and, from a modern perspective, it is easy to believe that there is a connection between these topics. We question whether Einstein might have considered that a correlation between nonlocal features of Quantum Mechanics and the Einstein-Rosen bridge can be used to explain entanglement. We analyse this question by discussing the used conceptions of "completeness," "atomistic structure of matter," and "quantum phenomena." We discuss the historical embedding of the two works and the context to modern research. Recent approaches are presented that formulate an EPR=ER principle and claim an equivalence of the basic principles of these two papers.